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| Tue 27 Oct 2026
Beijing, Oct. 26 -- Hunan Provincial Communications Planning, Survey and Design Institute has obtained a patent for anchorage active drainage system. This invention was developed by Li Gu, Zhang Long, Tan Chao, Xu Ziran, Liu Rong, Cui Jianfeng, Peng Jianghui, Chen Liang, Lu Jiangbo, Shi Xiaodong, Cheng Lijuan, Zhao Boyong, Qiao ..